fix(deps): update dependency sinon to v21

Author: renovate-bot

.github/scripts/package.json

@@ -16,6 +16,6 @@
     "devDependencies": {
         "@octokit/rest": "^19.0.0",
         "mocha": "^10.0.0",
-        "sinon": "^18.0.0"
+        "sinon": "^21.0.0"
     }
 }

package.json

@@ -60,7 +60,7 @@
     "@types/mocha": "^10.0.10",
     "@types/node": "^22.15.3",
     "@types/proxyquire": "^1.3.31",
-    "@types/sinon": "^17.0.4",
+    "@types/sinon": "^21.0.0",
     "async": "^3.2.6",
     "c8": "^10.1.3",
     "gapic-tools": "^1.0.2",
@@ -75,7 +75,7 @@
     "p-queue": "^8.1.0",
     "pack-n-play": "^3.0.1",
     "proxyquire": "^2.1.3",
-    "sinon": "^20.0.0",
+    "sinon": "^21.0.0",
     "ts-loader": "^9.5.2",
     "typescript": "^5.8.3",
     "webpack-cli": "^6.0.1"

samples/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@google-cloud/datastore": "^10.0.1",
-    "sinon": "^18.0.0"
+    "sinon": "^21.0.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",